GitLab

Monitor omnibox focus notification to update the clear button visibility
on focus.

Bug: 866446, 865019, 865013, 864511
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Iecf54d4550e4c6fe3f3988a54602c4d32d417f89
Reviewed-on: https://chromium-review.googlesource.com/1143860
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577161}